采矿与安全工程学报2013，Vol.30Issue(1)：123-127,5.
马依西保护层开采理论分析及数值模拟研究
Theoretical analysis and numerical simulation on protective seam extraction in Mayixi mine
摘要
Abstract
Gas accidents in coal mine have been considered as one of the worst coal mine disasters and often cause lots of death of miners. The protective extraction method is the most effective and regional way to prevent coal and gas outburst when multiple coal seams are mined in the outburst mine. In this paper, based on the theoretical analysis and feasibility study of applying the protective extraction technique to prevent outburst during multiple coal seams mining, the protective coal seam was determined by analyzing gas occurrence characteristics of each seam and the lithology of coal formation. Meanwhile, by considering the key influence factors for the selection of protective coal seam and the practical situations in Mayixi Coal Mine, the deformation rules of coal and rock mass during the mining process of protective seam were obtained by the numerical simulation of FLAC3D. The theoretical analysis and numerical simulation results show that choosing No. 5-2 Coal Seam as the protective seam to be mined first, can greatly eliminate outburst danger for the upper and lower protected seams, and achieve the goal of outburst prevention and gas control in region.关键词
突出煤层群/突出防治/保护层选择/合理性分析Key words
outburst coal seam group/ outburst prevention/ protective seam selection/ reasonable analysis分类
矿业与冶金引用本文复制引用
张枚润,杨胜强,程健维,蒲荣飞,王大强,王凤双..马依西保护层开采理论分析及数值模拟研究[J].采矿与安全工程学报,2013,30(1):123-127,5.基金项目
煤炭资源与安全开采国家重点实验室自主研究课题项目(SKLCRSM11X01) （SKLCRSM11X01）
国家自然科学基金项目(51174198) （51174198）
